This is an uncut key. That’s how it comes from the factory.
The uncut key has the potential to open any door. But that is just a potential.
The locksmith cuts the key so that it can open a specific door. When he does this, he is setting a goal for the key.
When we are young, we also start with a huge potential. But that is just a potential.
We also need to prepare to achieve our goals. We need to define which doors we want to open!
Effective Software Design 
I think the key should be left uncut. Like you said, that’s how it came from the factory. That’s how it was made, and that’s it most natural state. I don’t see anything wrong with an uncut key.
Just because we see fit that it should open doors doesn’t mean that’s what it wants. Maybe it just wants to slide in and out of keyways, never aligning the pins with the shear line and allowing the core to rotate? Don’t alter it the way you want, ask what it wants first. Once you cut it, you rob it of all its potential to open any door, and limit it to only a single door. If it wants to be cut, it’s the only one that can make such an irreversible decision.
Leave it uncut. It’s still a key, even when uncut.